What are the three types of power distribution?

• A. Switches; Fuses; Circuit Breakers/Relays
• B. Switches; Relays; Transformers
• C. Fuses; Diodes; Resistors
• D. Circuit Breakers/Relays; Inductors; Capacitors

Answer: (D)

Power distribution relies on three kinds of hardware that move, store, and regulate electrical power in a system. Circuit breakers and relays control where power flows and protect circuits from faults, acting as the protection and switching layer. Inductors help manage current by resisting rapid changes, which smooths out surges and helps with transient stability. Capacitors store charge and stabilize voltage, providing instantaneous current when needed and aiding in filtering and power quality. Together, these three categories cover protection/switching, current control, and voltage stabilization—the essential roles in distributing electrical power effectively. The other options mix components that don’t form this same practical grouping, such as diodes, resistors, or transformers, which aren’t part of the three distribution types described here.